When will the rose seedlings be planted?
Planting rose seedlings in the courtyard is a poetic thing, but for these prickly beauties to truly bloom, it is crucial to master the golden period of planting and cultivation techniques. Today, we will systematically sort out the key points of rose seedling cultivation from phenology laws to practical details. 1. Grasping the rules of rose growth cycle 1.1 Planting differences in north and south regions In northern regions, it is recommended to plant after soil thawing from March to April. At this time, the ground temperature will rise to above 12℃, which is conducive to root development. Autumn planting from October to November can be chosen in the warm zone of the south to avoid the risk of water accumulation in the plum rainy season. Whether it is north or south, ensure that there is no extreme weather within 30 days after planting. 1.2 Differences between greenhouse seedlings and open-air seedlings Commercially available greenhouse seedlings with nutrient bowls are highly adaptable and can be transplanted in spring and autumn. Bare-root seedlings cultivated in the open air are more sensitive to the season. It is recommended to complete the planting before germination in early spring, and the effect is better when combined with rooting powder. 2. Five-step scientific cultivation 2.1 Soil improvement technology prepares the substrate according to humus soil: coarse sand: organic fertilizer =5:3:2, and mixes 200g of sulfur powder per square meter to adjust the pH value. The sticky soil needs to be improved by adding perlite to ensure that the porosity reaches more than 30%. 2.2 Root Treatment Points After receiving the seedlings, soak the roots in potassium permanganate solution for 15 minutes. Carry out "root opening" treatment on the winding roots, and use branch scissors to prune 1/3 of the old roots in a radial manner to stimulate the germination of new roots. Apply plant ash to the wound to prevent infection. 2.3 Control the planting depth. Keep the grafting point 3-5cm higher than the ground during planting. Use the technique of "three burials, two steps and one seedling lifting": gently lift the seedlings to straighten out the root system when filling the soil to 1/3, and consolidate the soil in three times to form a breathable layer. 3. Build a 60% sunshade net for 15 days after planting during the critical period of later maintenance, and keep the soil moist but no water accumulation during the seedling stage. Diluted seaweed fertilizer is applied after new buds germinate, and brassinolide is used to promote photosynthesis. Pay attention to the condition of the leaves and immediately check the root system if wilting occurs.
Mastering these planting tips will form a complete closed loop from seedling selection to cultivation. The survival rate of rose seedlings can be increased to more than 90%, and full flower buds can be formed that year. Remember that patient observation and timely adjustment are the true meaning of raising roses.